A hydraulic locking device for external butt joints in pipeline construction

Abstract

A hydraulic locking device for an external butt joint device for pipeline construction, a special hydraulic manual pump is a power source for the hydraulic locking device, the locking mechanism is installed on the cylinder of the special hydraulic manual pump through a locking shaft B through a thread, during the pipeline assembly operation, the assembly fixing ring A and the assembly fixing ring B connected by a connecting pin are placed on the pipeline, the rocker is connected to the pump body through a rocker fixing pin, and the piston is connected to the piston rod through a piston connecting pin; the guide sleeve is fixed to the cylinder through a thread, the oil outlet valve is fixed to the pump body through a thread, the oil storage capsule is placed in the capsule shell, a pinhole is designed at the bottom of the capsule shell, a steel ball is placed in the pump body for closing and opening the unloading oil return port, the unloading valve stem is connected to the hand wheel through a hand wheel fixing pin, and is fixed to the pump body through a thread together with the unloading valve sleeve; the advantages are: compact structure, light weight, large locking force, low failure rate, simple operation, safety and reliability, and low labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline construction, in particular to a hydraulic locking device for an external butt joint of a pipeline construction. Background Art

[0002] The external pipe joint is an indispensable device for pipe joint assembly in pipeline construction. It is used to achieve the connection of two pipes and ensure that the misalignment of the two pipes to be connected is within a certain technical requirement. The external joint is widely used in pipeline construction projects, including line joints, pipe joint assembly, and station pipe installation. The main structural forms of existing pipeline external joints include lever-type external joints, chain-type pipeline external joints, hydraulic jack-type external joints, etc., which have defects such as bulky structure, inconvenient operation, and high labor intensity of operators. Therefore, a special hydraulic locking device for external joints that can solve the above defects is urgently needed. Summary of the invention

[0003] In order to solve the defects of the prior art, the present invention provides a hydraulic locking device for an external joint device for pipeline construction. The technical solution of the present invention is: a hydraulic locking device for an external joint device for pipeline construction, comprising: a special hydraulic manual pump, a locking mechanism; the special hydraulic manual pump comprises a pump body, a rocker, a plunger, a plunger sleeve, a piston, a piston rod, a cylinder barrel, a threaded cap, an oil outlet valve, an oil suction valve, an oil storage capsule, and a capsule shell, and the special hydraulic manual pump is the power source of the hydraulic locking device; the locking mechanism is installed on the cylinder barrel of the special hydraulic manual pump through a locking shaft B through a thread, and the locking shaft A and the pull rod seat are connected through the pull rod seat The rods are connected together, and the return spring is installed between the locking shaft A and the locking shaft B; when the pipeline is assembled, the assembly fixing ring A and the assembly fixing ring B connected by the connecting pin are placed on the pipeline, and the bolt adjustment seat is in contact with the outer surface of the pipeline; the locking shaft A and the locking shaft B of the hydraulic locking device are placed on the outside of the locking seat A and the locking seat B, which are used to tighten the assembly fixing ring A and the assembly fixing ring B; the special hydraulic manual pump is the power source of the hydraulic locking device; the rocker is connected to the pump body through the rocker fixing pin, and the rocker is connected to the plunger through the plunger connecting pin. The plunger slides in the plunger sleeve, and the plunger sleeve is connected through The thread is fixed to the pump body; the cylinder is fixed to the pump body through the thread, and the end face of the cylinder and the pump body are sealed by the O-ring B. The piston is connected to the piston rod through the piston connecting pin and installed in the cylinder. The piston is installed with a Gley ring; the guide sleeve is fixed to the cylinder through the thread and serves as the guide body of the piston rod; the threaded cap is installed to the end of the piston rod through the thread, and plays a role in protecting the piston rod when the end of the piston rod is stressed; the oil outlet valve is fixed to the pump body through the thread, and the hydraulic oil enters the bottom of the piston through the oil outlet valve; the process hole plug is fixed to the pump body through the thread to seal the process hole of the pump body; the oil suction valve is fixed to the pump body through the thread, The hydraulic oil enters the plunger sleeve through the oil suction valve; the oil storage capsule is placed in the capsule shell, and the oil storage capsule is fixed in the capsule shell by a compression sleeve. The capsule shell is fixed to the pump body by threads, and the compression sleeve and the pump body are sealed at the end faces by O-ring A. A steel ball is placed in the pump body for closing and opening the unloading oil return port. The unloading valve stem is connected to the handwheel through a handwheel fixing pin, and is fixed to the pump body together with the unloading valve sleeve by threads; the locking shaft B is fixed to the cylinder barrel by threads, the locking shaft A and the pull rod are connected together by threads, the pull rod seat is connected to the locking shaft A by the pull rod, and the return spring is located between the locking shaft A and the locking shaft B.

[0004] The piston is made of copper and can slide in the cylinder.

[0005] The guide sleeve is made of copper.

[0006] The locking shaft A can slide on the cylinder barrel.

[0007] The bottom of the capsule shell is designed with a pinhole to balance the negative pressure generated when the oil storage capsule absorbs oil.

[0008] The beneficial effects of the present invention are as follows: the hydraulic locking device composed of a special hydraulic manual pump and a locking mechanism has a compact structure, light weight, large locking force and low failure rate; and when used together with two pair fixing rings connected by a connecting pin, the pipe mouth pairing process in pipeline construction is simple to operate, safe and reliable, and the labor intensity of operators is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the application state of the present invention.

[0010] Figure 2 It is the front view of the installation diagram of the present invention.

[0011] Figure 3 It is a top view of the installation diagram of the present invention.

[0012] Figure 4 It is the structural diagram of the special hydraulic manual pump of the present invention.

[0013] Figure 5 It is a cross-sectional view of the structure of the special hydraulic manual pump of the present invention.

[0014] In the figure: 1 is a hydraulic locking device, 2 is a locking seat A, 3 is a bolt adjustment seat, 4 is an adjustment bolt, 5 is a fixed ring assembly A, 6 is a connecting pin shaft, 7 is a fixed ring assembly B, 8 is a pipeline, 9 is a locking seat B, 10 is a special hydraulic manual pump, 11 is a locking shaft A, 12 is a return spring, 13 is a pull rod, 14 is a locking shaft B, 15 is a pull rod seat, 16 is a compression sleeve, 17 is an O-ring A, 18 is a rocker fixing pin, 19 is a plunger connecting pin, 20 is a plunger, 21 is a plunger sleeve, 22 is an O-ring B, 23 is Piston, 24 is a rocker, 25 is a threaded cap, 26 is a guide sleeve, 27 is a piston rod, 28 is a cylinder, 29 is a piston connecting pin, 30 is a grid ring, 31 is an oil outlet valve, 32 is a process hole plug, 33 is a pump body, 34 is an oil suction valve, 35 is an oil storage capsule, 36 is a capsule shell, 37 is a relief valve, 38 is a steel ball, 39 is a unloading valve sleeve, 40 is an unloading valve stem, 41 is a handwheel fixing pin, 42 is an unloading handwheel, 43 is a capsule shell pinhole, 44 is hydraulic oil, 45 is an overflow oil return port, and 46 is an unloading oil return port. DETAILED DESCRIPTION

[0015] In order to make the technical solution of the present invention more comprehensive, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0016] A hydraulic locking device for an external butt joint for pipeline construction, comprising: a special hydraulic manual pump 10, a locking mechanism; the special hydraulic manual pump 10 comprises a pump body 33, a rocker 24, a plunger 20, a plunger sleeve 21, a piston 23, a piston rod 27, a cylinder 28, a threaded cap 25, an oil outlet valve 31, an oil suction valve 34, an oil storage capsule 35, and a capsule shell 36. The special hydraulic manual pump 10 is a power source for the hydraulic locking device 1; the locking mechanism is connected by a locking shaft B14 through a screw The groove is installed on the cylinder 28 of the special hydraulic manual pump 10, the locking shaft A11 and the tie rod seat 15 are connected together by the tie rod 13, and the return spring 12 is installed between the locking shaft A11 and the locking shaft B14; when the pipeline 8 is assembled, the assembly fixing ring A5 and the assembly fixing ring B7 connected by the connecting pin 6 are placed on the pipeline 8, and the bolt adjustment seat 3 is in contact with the outer surface of the pipeline 8; the locking shaft A11 and the locking shaft B14 of the hydraulic locking device 1 are placed on the locking seat A 2. The outer side of the locking seat B9 is used to tighten the fixing ring A5 and the fixing ring B7; the special hydraulic manual pump 10 is the power source of the hydraulic locking device 1; the rocker 24 is connected to the pump body 33 through the rocker fixing pin 18, the rocker 24 is connected to the plunger 20 through the plunger connecting pin 19, the plunger 20 slides in the plunger sleeve 21, and the plunger sleeve 21 is fixed to the pump body 33 through threads; the cylinder 28 is fixed to the pump body 33 through threads, and the end face of the cylinder 28 is connected to the pump body 3 The piston 23 is connected to the piston rod 27 through the piston connecting pin 29 and installed in the cylinder 28. The piston 23 is installed with a Gly ring 30. The guide sleeve 26 is fixed to the cylinder 28 through threads and serves as a guide for the piston rod 27. The threaded cap 25 is installed to the end of the piston rod 27 through threads and protects the piston rod 27 when the end of the piston rod 27 is stressed. The oil outlet valve 31 is fixed to the pump body 33 through threads, and the hydraulic oil 44 enters the pump body through the oil outlet valve 31. The bottom of the plug 23; the process hole plug 32 is fixed to the pump body 33 by threads to seal the process hole of the pump body 33; the oil suction valve 34 is fixed to the pump body 33 by threads, and the hydraulic oil 44 enters the plunger sleeve 21 through the oil suction valve 34; the oil storage capsule 35 is placed in the capsule shell 36, and the oil storage capsule 35 is fixed in the capsule shell 36 by the compression sleeve 16. The capsule shell 36 is fixed to the pump body 33 by threads, and the compression sleeve 16 and the pump body 33 are sealed at the end face by the O-ring A17 The steel ball 38 is placed in the pump body 33 to close and open the unloading oil return port 46. The unloading valve stem 40 is connected to the hand wheel 42 through the hand wheel fixing pin 41, and is fixed to the pump body 33 together with the unloading valve sleeve 39 through threads; the locking shaft B14 is fixed to the cylinder 28 through threads, the locking shaft A11 and the pull rod 13 are connected together through threads, the pull rod seat 15 is connected to the locking shaft A11 through the pull rod 13, and the return spring 12 is located between the locking shaft A11 and the locking shaft B14.

[0017] The piston 23 is made of copper and can slide in the cylinder 28 .

[0018] The guide sleeve 26 is made of copper material.

[0019] The locking shaft A11 can slide on the cylinder 28 .

[0020] The bottom of the capsule shell 36 is designed with a pinhole to balance the negative pressure generated when the oil storage capsule 35 absorbs oil.

[0021] When the pipeline 8 is in operation, the unloading hand wheel 42 is turned to drive the unloading valve stem 40 to press the steel ball 38 to close the unloading oil return port 46; the rocker 24 is lifted, the plunger 20 moves upward, the oil outlet valve 31 is closed, and the hydraulic oil 44 enters the lower end of the plunger 20 through the oil suction valve 34; the hydraulic oil 44 is stored in the oil storage capsule 35, and the negative pressure formed during oil suction is balanced with the external air pressure through the capsule shell pinhole 43 on the capsule shell 36; the rocker 24 is pressed down, the plunger 20 moves downward, the oil suction valve 34 is closed, and the generated high-pressure hydraulic oil 44 passes through the capsule shell 36. The oil outlet valve 31 enters the bottom of the piston 23, pushing the piston 23 and the piston rod 27 connected to the piston connecting pin 29 to move along the inner wall of the cylinder 28; the threaded nut 25 contacts the tie rod seat 15, and the tie rod seat 15 and the tie rod 13 drive the locking shaft A11 to move along the outer wall of the cylinder 28, so that the relative position of the locking shaft A11 and the locking shaft B14 is reduced, and the locking seat A2 and the locking seat B9 are tightened to tighten the fixing ring A5 and the fixing ring B7 to fix the pipeline 8; the adjusting bolt 4 can fine-tune the misalignment when the pipeline 8 is assembled.

[0022] During the operation of the dedicated hydraulic manual pump 10 , when the pump pressure exceeds the set pressure of the relief valve 37 , the relief valve 37 is actuated, and the hydraulic oil 44 flows back into the oil storage capsule 35 through the overflow oil return port 45 .

[0023] After the pipeline 8 is assembled, the unloading hand wheel 42 is turned to drive the unloading valve stem 40 to loosen the steel ball 38 and open the unloading oil return port 46; the locking shaft A11 moves under the action of the return spring 12 and pushes the pull rod 13 and the pull rod seat 15, so that the piston rod 27 and the piston 23 retract, and the hydraulic oil 44 in the cylinder 28 flows back to the oil storage capsule 35 through the unloading oil return port 46; after the locking shaft A11 returns to the initial position, the hydraulic locking device 1 is removed from the assembly fixing ring.

Claims

1. A hydraulic locking device for an external butt joint of a pipeline construction, comprising: A special hydraulic manual pump (10), a locking mechanism; characterized in that: the special hydraulic manual pump (10) comprises a pump body (33), a rocker (24), a plunger (20), a plunger sleeve (21), a piston (23), a piston rod (27), a cylinder (28), a threaded cap (25), an oil outlet valve (31), an oil suction valve (34), an oil storage capsule (35), and a capsule housing (36); the special hydraulic manual pump (10) is a power source for a hydraulic locking device (1); the locking mechanism is a locking shaft B (14) which is installed on the cylinder (28) of the special hydraulic manual pump (10) through a thread; the locking shaft A (11), a tie rod seat (15 ) are connected together by a pull rod (13), and a return spring (12) is installed between a locking shaft A (11) and a locking shaft B (14); when the pipeline (8) is assembled, the assembly fixing ring A (5) and the assembly fixing ring B (7) connected by the connecting pin (6) are placed on the pipeline (8), and the bolt adjustment seat (3) is in contact with the outer surface of the pipeline (8); the locking shaft A (11) and the locking shaft B (14) of the hydraulic locking device (1) are placed on the outside of the locking seat A (2) and the locking seat B (9) to tighten the assembly fixing ring A (5) and the assembly fixing ring B (7); the special hydraulic manual pump (10) is a hydraulic locking device (1) a power source; a rocker (24) connected to a pump body (33) via a rocker fixing pin (18); the rocker (24) connected to a plunger (20) via a plunger connecting pin (19); the plunger (20) slides in a plunger sleeve (21); the plunger sleeve (21) is fixed to the pump body (33) via a thread; a cylinder (28) is fixed to the pump body (33) via a thread; an end face of the cylinder (28) and the pump body (33) are sealed via an O-ring B (22); a piston (23) connected to a piston rod (27) via a piston connecting pin (29) and installed in the cylinder (28); a Gly ring (30) is installed on the piston (23); a guide sleeve (2 6) is fixed to the cylinder barrel (28) by threads and serves as a guide for the piston rod (27); the threaded cap (25) is installed to the end of the piston rod (27) by threads and plays a role in protecting the piston rod (27) when the end of the piston rod (27) is subjected to force; the oil outlet valve (31) is fixed to the pump body (33) by threads, and the hydraulic oil (44) enters the bottom of the piston (23) through the oil outlet valve (31); the process hole plug (32) is fixed to the pump body (33) by threads and seals the process hole of the pump body (33); the oil suction valve (34) is fixed to the pump body (33) by threads, and the hydraulic oil (44) enters the plunger sleeve (21) through the oil suction valve (34);The oil storage capsule (35) is inserted into the capsule housing (36), and the oil storage capsule (35) is fixed in the capsule housing (36) by means of a compression sleeve (16). The capsule housing (36) is fixed to the pump body (33) by means of threads. The compression sleeve (16) and the pump body (33) are sealed at the end faces by means of an O-ring A (17). A steel ball (38) is inserted into the pump body (33) to close and open the unloading oil return port (46). The unloading valve stem (40) is fixed by means of a hand wheel. The fixed pin (41) is connected to the hand wheel (42) and is fixed to the pump body (33) together with the unloading valve sleeve (39) by threads; the locking shaft B (14) is fixed to the cylinder barrel (28) by threads, the locking shaft A (11) and the tie rod (13) are connected together by threads, the tie rod seat (15) is connected to the locking shaft A (11) by the tie rod (13), and the return spring (12) is located between the locking shaft A (11) and the locking shaft B (14); The piston (23) is made of copper and can slide in the cylinder (28); the guide sleeve (26) is made of copper; the locking shaft A (11) can slide on the cylinder (28); a pinhole is designed at the bottom of the capsule shell (36) to balance the negative pressure generated when the oil storage capsule (35) absorbs oil; When the pipeline (8) is assembled, the unloading hand wheel (42) is rotated to drive the unloading valve stem (40) to press the steel ball (38) to close the unloading oil return port (46); the rocker (24) is lifted, the plunger (20) moves upward, the oil outlet valve (31) is closed, and the hydraulic oil (44) enters the lower end of the plunger (20) through the oil suction valve (34); the hydraulic oil (44) is stored in the oil storage capsule (35), and the negative pressure generated during oil suction is balanced with the external air pressure through the capsule shell pinhole (43) on the capsule shell (36); the rocker (24) is pressed downward, the plunger (20) moves downward, the oil suction valve (34) is closed, and the generated high-pressure hydraulic oil (44) is discharged through the oil outlet. The valve (31) enters the bottom of the piston (23), pushing the piston (23) and the piston rod (27) connected to the piston connecting pin (29) to move along the inner wall of the cylinder (28); the threaded cap (25) contacts the tie rod seat (15), and the tie rod seat (15) and the tie rod (13) drive the locking shaft A (11) to move along the outer wall of the cylinder (28), so that the relative position of the locking shaft A (11) and the locking shaft B (14) is reduced, and the locking seat A (2) and the locking seat B (9) are tightened to make the assembly fixing ring A (5) and the assembly fixing ring B (7) tighten the pipeline (8); the adjusting bolt (4) can fine-tune the assembly misalignment when the pipeline (8) is assembled; During operation of the dedicated hydraulic manual pump (10), when the pump pressure exceeds the set pressure of the relief valve (37), the relief valve (37) is actuated, and the hydraulic oil (44) flows back into the oil storage capsule (35) through the overflow oil return port (45); After the pipe (8) is assembled, the unloading hand wheel (42) is turned to drive the unloading valve stem (40) to release the steel ball (38) and open the unloading oil return port (46); the locking shaft A (11) moves under the action of the return spring (12) and pushes the pull rod (13) and the pull rod seat (15), so that the piston rod (27) and the piston (23) retract, and the hydraulic oil (44) in the cylinder (28) flows back into the oil storage capsule (35) through the unloading oil return port (46); after the locking shaft A (11) returns to the initial position, the hydraulic locking device (1) is removed from the assembly fixing ring.

Images